Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
11 results
Aug 22, 2026Mailgun for: Server-Side Request Forgery (SSRF)CVE-2026-78003 · WordPress plugins & themes · reported by WordfenceCritical 9.8
The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST['addresses'], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site's API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover.
- Product
- Mailgun for
- Affected
- up to 2.2.0
- What to do
- Affects up to 2.2.0. Update Mailgun for to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 6, 2026FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider: Stored Cross-Site ScriptingCVE-2026-16636 · WordPress plugins & themes · reported by WordfenceHigh 7.2
The FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Recipient Display Name (to.name) in Email Logs in all versions up to, and including, 2.2.95 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is delivered via an attacker-controlled recipient display name (to.name) in a wp_mail() call and does not fire in the log list view — only in the detail view when an administrator uses the Prev/Next navigation controls, as that path bypasses the escapeHtml pipeline used by the list view.
- Product
- FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider
- Affected
- up to 2.2.95
- What to do
- Affects up to 2.2.95. Update FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Jul 31, 2026Mailgun for: Does not perform any capability or nonce check on an unauthenticated AJAX action that adds subscribers to the site owner's configured email service mailing listsCVE-2026-14834 · WordPress plugins & themes · reported by WPScanMedium 6.5
The Mailgun for WordPress plugin before 2.2.1 does not perform any capability or nonce check on an unauthenticated AJAX action that adds subscribers to the site owner's configured email service mailing lists, allowing unauthenticated attackers to enrol arbitrary email addresses into those lists using the owner's stored API credentials.
- Product
- Mailgun for
- Fixed in
- 2.2.1
- What to do
- Update Mailgun for to 2.2.1 or newer.
Jun 17, 2026Unauthenticated Local File Inclusion in Gunslinger <= 1.7 versions.CVE-2025-69166 · WordPress plugins & themes · reported by PatchstackHigh 8.1
Unauthenticated Local File Inclusion in Gunslinger <= 1.7 versions.
- Affected
- up to 1.7
- What to do
- Affects up to 1.7. Update the plugin to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Dec 12, 2025Mailgun Subscriptions: Stored Cross-Site ScriptingCVE-2025-11876 · WordPress plugins & themes · reported by WordfenceMedium 6.4
The Mailgun Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mailgun_subscription_form' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- Product
- Mailgun Subscriptions
- Affected
- up to 1.3.1
- What to do
- Affects up to 1.3.1. Update Mailgun Subscriptions to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordgithub.complugins.trac.wordpress.org
Sep 3, 2025The Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more plugin forCVE-2025-9219 · WordPress plugins & themes · reported by WordfenceMedium 4.3
The Post SMTP – WP SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'update_post_smtp_pro_option_callback' function in all versions up to, and including, 3.4.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enable pro extensions.
- Affected
- up to 3.4.1
- What to do
- Affects up to 3.4.1. Update the plugin to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 28, 2025WP Mailgun SMTP: Missing AuthorizationCVE-2025-48327 · WordPress plugins & themes · reported by PatchstackMedium 5.3
Missing Authorization vulnerability in inkthemes WP Mailgun SMTP wp-mailgun-smtp allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects WP Mailgun SMTP: from n/a through <= 1.0.7.
- Product
- WP Mailgun SMTP
- Affected
- up to 1.0.7
- What to do
- Affects up to 1.0.7. Update WP Mailgun SMTP to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Feb 19, 2025YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service: Stored Cross-Site ScriptingCVE-2025-0916 · WordPress plugins & themes · reported by WordfenceHigh 7.2
The YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 2.4.9 to 2.6.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Note: The vulnerability has been initially patched in version 2.4.8 and was reintroduced in version 2.4.9 with the removal of the wp_kses_post() built-in WordPress sanitization function.
- Product
- YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service
- Affected
- 2.4.9 to 2.6.2
- What to do
- Affects 2.4.9 to 2.6.2. Update YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Nov 23, 2024FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider: PHP Object InjectionCVE-2024-9511 · WordPress plugins & themes · reported by WordfenceCritical 9.8
The FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.2.82 via deserialization of untrusted input in the 'formatResult' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code. The vulnerability was partially patched in version 2.2.82.
- Product
- FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider
- Affected
- up to 2.2.82
- What to do
- Affects up to 2.2.82. Update FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 20, 2019The raygun4wp plugin before 1.8.3 for WordPress has XSS in the settings, a different issue than CVE-2017-9288.CVE-2017-18531 · WordPress plugins & themes · reported by MITREMedium 6.1
The raygun4wp plugin before 1.8.3 for WordPress has XSS in the settings, a different issue than CVE-2017-9288.
- Product
- raygun4wp
- Fixed in
- 1.8.3
- What to do
- Update raygun4wp to 1.8.3 or newer.
Full record and what to do →NVD recordwordpress.orgwordpress.org
May 29, 2017Raygun4WP plugin 1.8.0: A reflected XSS in sendtesterrorCVE-2017-9288 · WordPress plugins & themes · reported by MITREMedium 6.1
The Raygun4WP plugin 1.8.0 for WordPress is vulnerable to a reflected XSS in sendtesterror.php (backurl parameter).
- Product
- Raygun4WP plugin 1.8.0
- Affected
- 1.8.0 to 1.8.0
- What to do
- Affects 1.8.0 to 1.8.0. Update Raygun4WP plugin 1.8.0 to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordjgj212.blogspot.krgithub.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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